| ... | ... | @@ -2,11 +2,21 @@ |
| 2 | 2 | //! so that they can be created and destroyed appropriately. This structure |
| 3 | 3 | //! is used to collect all the errors from the various places into one |
| 4 | 4 | //! convenient place for API users to consume. |
| 5 | //! |
| 6 | //! There is one special encoding for this data structure. If both arrays are |
| 7 | //! empty, it means there are no errors. This special encoding exists so that |
| 8 | //! heap allocation is not needed in the common case of no errors. |
| 5 | 9 | |
| 6 | 10 | string_bytes: []const u8, |
| 7 | 11 | /// The first thing in this array is an `ErrorMessageList`. |
| 8 | 12 | extra: []const u32, |
| 9 | 13 | |
| 14 | /// Special encoding when there are no errors. |
| 15 | pub const empty: ErrorBundle = .{ |
| 16 | .string_bytes = &.{}, |
| 17 | .extra = &.{}, |
| 18 | }; |
| 19 | |
| 10 | 20 | // An index into `extra` pointing at an `ErrorMessage`. |
| 11 | 21 | pub const MessageIndex = enum(u32) { |
| 12 | 22 | _, |
| ... | ... | @@ -72,6 +82,7 @@ pub fn deinit(eb: *ErrorBundle, gpa: Allocator) void { |
| 72 | 82 | } |
| 73 | 83 | |
| 74 | 84 | pub fn errorMessageCount(eb: ErrorBundle) u32 { |
| 85 | if (eb.extra.len == 0) return 0; |
| 75 | 86 | return eb.getErrorMessageList().len; |
| 76 | 87 | } |
| 77 | 88 | |
| ... | ... | @@ -313,6 +324,17 @@ pub const Wip = struct { |
| 313 | 324 | |
| 314 | 325 | pub fn toOwnedBundle(wip: *Wip) !ErrorBundle { |
| 315 | 326 | const gpa = wip.gpa; |
| 327 | if (wip.root_list.items.len == 0) { |
| 328 | // Special encoding when there are no errors. |
| 329 | wip.deinit(); |
| 330 | wip.* = .{ |
| 331 | .gpa = gpa, |
| 332 | .string_bytes = .{}, |
| 333 | .extra = .{}, |
| 334 | .root_list = .{}, |
| 335 | }; |
| 336 | return empty; |
| 337 | } |
| 316 | 338 | wip.setExtra(0, ErrorMessageList{ |
| 317 | 339 | .len = @intCast(u32, wip.root_list.items.len), |
| 318 | 340 | .start = @intCast(u32, wip.extra.items.len), |
Andrew Kelley <andrew@ziglang.org> 2023-02-28 16:36:09-07:00
lib